Harmful Algal Information System: Event US-22-002

General Information

Event name:	US-22-002
Country:	UNITED STATES
Nature of the harmful event:	High Phyto concentration , Seafood toxins
Event directly affected:	Shellfish
Toxicity detected:	Yes (Approximate range: 49 - 200 ppm)
Associated syndrome:	ASP
Unexplained toxicity:	No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme:	Yes (Oregon Department of Agriculture annual biotoxin monitoring program for molluscan shellfish)
Event occurred before in this location:	Yes (Occurs regularly)
Individuals to contact:	Manderson, Alex

Location:	Latitude: , Longitude:
General location information:	Oregon Coastline, HAB Area code(s): US-22
Additional location information:
Bloom event dates (yyyy/mm/dd):	Start: 2022-01-01,
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:	The bloom continued into 2023

Causative organism known:	Yes
Causative Species/Genus:	Pseudo-nitzschia spp. ( cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known:	µg/l
Additional bloom information:
Event-related bibliography:

Nutrient information:

Temperature Range During Event:

Max: °C, Min: °C

Salinity Range During Event:

Bloom location in the water column:

Growth:

Growth Comments

Additional Environmental information:

Species containing the toxin	Toxin type	Toxin details	Max. concentration	Assay type
Razor Clams	Domoic Acid	DA	200 ppm	LC
Dungeness Crab viscera	Domoic Acid	DA	58 ppm	LC
California Mussels	Domoic Acid	DA	49 ppm	LC

Kit used:

Type of kit used:

Additional information:

Economic losses:

Significant economic losses with loss of tourism and the delay of a profitable fishery.

Management decision:

The recreational razor clam fishery was closed all year and the Dungeness Crab fishery was delayed.

Additional harmful effect information:

Created at 07:18 on 31 Mar 2023